Planoqraph



F. VOGELSANG.

DOOR LOCK. APPLICATION msn MAR. 16.1915.

1,312,219. 4 Patented Aug. 5,1919.

4 SHEETS-SHEET l.

www t Windeln/NH HHH-H F. VOGELSANG.

DOOR LOCK.

APPLICAHON FILED MAR. 16,1915.

I 11,312,21 9., Patented'Aug. 5, 1919.

4 SHEETS--SHEET 2,.

Patented Aug. 5, 1919.

4 SHEETS-SHEET 3.

IIIHIIIIIIIIIIIIII I F. VOGELSANG.

DOOR LOCK.

APPLICATION FILED MAR. I5 I9I5| 'rk-m uLUMuIA PLANoGlzAPH C0.. WASHINdToN. I). c.

F. VOGELSANG.

Doo' LocK.

APPLICATION FILEDMAR. f6 i915.

- Patented Aug. 5, 1919.

4 SHEETS-SHEET 4.

lll IIIHIIIIIII TI IE C`0LUMBIA PLANUGRAPH cu.. WASHINGTON, D.. C.

FRITZ voenLsAive, or cnnniiorrmvisune, NEAR BEiiLm, GERMANY.

Doon-Look.

Specification of Letters Patent.

Patented Aug. 5, 1919.

Application led March 16, 1915. Serial No. `14,756.

To all whom t may concern.'

Be it known that I, FRITZ VoGnLsANG, merchant, of Charlottenburg, near Berlin, Germany, subject of the German Emperor, residing at Charlottenburg, near Berlin, Germany, have invented certain new and useful Improvements in Door-Locks, of which the following is a specification. i

The invention relates to a door lock which permits of easily opening the door with the right key but affords a double check against the unauthorized opening of the said door, without requiring special manipulation when shutting the door, as both safety members (door lock and latch) assumethe locking position automatically when shutting the door.

The accompanying drawings illustrate, by way of example, a constructional form of the invention.

Figure l shows the lock casing with the safety bolt mounted pivotally therein, viewed from the inner side of the door.

Fig, 2 shows the door closed and locked.

Fig. 3 is a view similar to Fig: 2, the door lock being opened from within butthe safety bolt not yet fully withdrawn.

Fig. t is a similar view to Fig. 3, the lock being opened from without by means of a key, the safety bolt being withdrawn.

Fig. 5 is a section taken on line I-I of Fig. 2.

Fig. 6 is a section taken on line II--II of Fig. 4, and i Fig. 7 is a view of the removed lock casing cover. i

Fig. 8 is a part plan and part sectional l view of the safety-bolt and its mountings,

and

Fig. 9 is an elevation of the same parts.

The opening part a of the door is provided with the lock casing b, which has associated with it the safety bolt c. The latter which is mounted to have bot-h a vertical and a horizontal swinging movement with relation to its pivot c2, has a head c which is adapted to slide, when the door closes on the inclined face d3 of the box-like keeper plate or casing oZ secured to the stationary part a2 of the door or to the Vframe thereof and drops into the recess d in the keeper, and when opening the door it can move in the slot d2 formed in the said keeper, to the extent limited by the said slot.

Referring to Figs. 8 and 9, for the pivotal inountings of the safety-bolt c, it will be noted lthat a head c5, extends through the front of the casing b and has its shank rotatably carried in the sleeve c6 which may be formed as a part of said casing. Keyed on the; inner end of the shank of the head -05, so as to rotatetherewith, as best shown in Fig. 9, is a plate c4, whose functions will hereinafter appear. A screw c2 is threaded into the inner endof the shank, and serves tohold the plate 0? in place, the latter, together with the screw, also acting to lock the head c5 in position. The head c5 is laterally 'slotted to form a recess 07 inclosed `by the upper and lower halves of said head,

and in said recess is pivoted the arm or safety-bolt c, `said bolt having, adjacent its pivotal point, a cam-surface cs, against which a pin 09 operates. The pin c stands under pressure of a. spring 01 which is inclosed in the shank of the head and normally tends to push the arm c away from the lock. The screw c2 acts as a retainer for the spring c1?. It will thus be seen that the safety bolt c is capable of a vertical and horizontal pivotal movement.

The lock casing o is provided with a latchbolt e and with an auxiliary bolt f externally of similarshape. The latch bolt e which on shutting the door enters a corresponding aperture formed in the keeper l (Fig. 2) is mounted on a rod e guided in a bearing b and at its free end is provided with a projection e3. Between the latch bolt e and -the bearing b', a coiled spring e2 is provided surrounding the rod e', said spring tending to hold the latch bolt in its closed position.

The auxiliary bolt f is mounted on a rod f which is guided in the bearing b2 parallel to the rod e. A spring f2 surrounding this rod, forces the bolt 7 in an outward direction, said bolt f `coperating with a locking lever g provided in the lock casing and rotatable about the pivot g4. This locking lever 1g is under the influence of the spring (75 whichis secured thereto andbears on the earingb, said spring tending to push the lockingnoseig provided on the front arm ofthe lever g into the path of the latch bolt le. The action of the spring g5 is opposed by the action of the auxiliary bolt 7` which is connected by the cross-member f3 with the rod e of the latch bolt c, said member having an aperture through which rod e extends; and in the position shown in Fig. `1, that to say when the auxiliary bolt is in its outermost position,.this cross-member f3 engages underneath the nose g and pushes the same out of the path of the latch b olt e.

)When the door is closed, the latch bolt e and, the auxiliary. bolt are A pressed inwardly bythe wall of the casing l sliding on their oblique surfaces. yAs in this-case the cross-member f3 bears closely against the `latclrb'olt c, the inward displacement of the latchvbolt is not interfered with by the locking nose g which contacts'idly with the lcross-member and the upper surface of the A, 4corresponding keeper casingd. The auxiliary bolt f, howlatch'bolt.- -As soon as the door is completelyclosed, the latch bolt shoots forward under the action of its spring c2 into the aperture formed in the ever, owing to the yfact that itfhas not a corresponding aperture inthe wall of the casing'd toshoot'into, ris retained in its inner position so-th'attherlocking nosefg places itself, under 'the-action of its spr1ngg5, in

front ofthe latch bolt c and locks-the same.

Inthismanner the latch bolt is automatically locked when shutting the doorso that it is yimpossible to pushthe same 'back by means of an implement forced inthe chink ofI the door. K At the same time the lock bolt hasrv automatically re-assumed lits locking 'position -in the iabove vdescribed manner (Fig. 2).

f -The fopening of the lockfrom Within is effected by means of the handlefzl (Fig. 5) secured rotatablyonthe casing d, and provided with the plate z' formed with the two arms z", 3. The arm 'z''liniits by-contact vthe springe2 (Fig. 3).

The door canznow be opened to an extent y'determined by the head c of the safety bolt i c, sliding in the slot d2 formed in the keeper casing d, during which time the safety bolt is swung or rocked horizontally relatively to its pivot C2. Should it be desired toopen :the 4door completely, the 'safety bolt c is raised with a finger when the door is closed soi-that'the head c4 of the said bolt is removedfrom the recess d formed inthe casing4 d. and the door can now be fullyopened. Inorderto yopen the doorffrom' without,

.onlya singlekey is necessary. Preferably a. isafetyrflock fisusedof :the type in which,

after setting the tumblers, a cylinder can be (Fig. 7) rotatably secured to the cover l of .fthecasing b, is provided with two wings c,

k2 arranged at right angles to each other (Figs. 4 and 7) one of which, 7c', releases, when rotating the said cylinder, the latch bolt e by acting on the pin 2 and withdraws this bolt while the other k2 releases the safety bolt o. The latter is released owing to the fact that the wing k2 bears downwardly on a bent part c3 of a plate c4 connected with the pivot c2 of the safety bolt, thereby rocking said bolt upwardly about said pivot. In Fig. l the parts have been represented in the position which they assume whenby means of a key the released latch bolt is completely withdrawn and the safety bolt-is being raised. In this position ofthe parts, the door can be opened to its fullest extent.

In the lock casing b a plate m is provided which by means of the knob m2 can be displaced from within and which is formed with a lug or finger m adapted to engage in a corresponding groove c4 in the latch bolt rod c when said plate is in its locking position (Fig. 2). This prevents the release and withdrawal of the latch bolt as well as the release of the safety bolt because the rotation of the cylinder k is prevented by the abutment of the wing 7c or the pin i2 on the projection c3 of the stationary or fixed latch bolt rod c. The 'door cannot be opened from without even with the right lkey.

.Of essential importance in this invention,

is the coperation ofthe safety bolt with the latch bolt which is automatically locked when shutting the door. The safety bolt may, in this connection, have a different shape. Even the construction of the safety lock for opening the door from without, is not of essential importance andv any safety lock maybe used for this purpose.

Having now particularly described and ascertained the nature of `my said invention and in what manner the same is to be pcrformed, I declare that whaat I claim is:

1. In a door-lock, the combination of a locking-mechanism, a keeper, a safetyebolt mounted on said locking-mechanism and having a vertical movement to disengage said keeper and a horizontal movement to permit movement of the lock relative to said keeper, means interposed between said safety-bolt and said locking-niechanism to release said safety-bolt, said locking means including a latch-bolt, andineans to positively lock the latch-bolt when the door is completely closed.

2. In a door-lock, the combination, with a locking mechanism, a casing therefor, and a keeper; of a-safety bolt for engagement with said keeper having a pivotal mounting with-in the casing toswing vertically to disengage said keeper and also to swing laterally to permit movement of the locking mechanism and its casing relative to said keeper; a releasing member Within said casing operable upon said safety bolt to positively effect its vertical, disengagingmovement; and means for actuating said releasing member.

3. In a door-lock, the combination, with a locking mechanism, a casing therefor, and a keeper; of a safety bolt for engagement with said keeper having a pivotal mounting Within the casing to svving vertically to disengage said keeper and also to swing horizontally to permit movement of the locking mechanism and its casing relative to said keeper; a releasing member Within said casing operable upon said safety bolt to positively effect its vertical, disengaging movement; and key-operated means for actuating said releasing member.

4. In a door-lock, the combination, With a locking mechanism, a casing therefor, and a keeper; of a safety bolt mounted Within said casing and having a portion projecting eX- teriorly thereof for engagement with said keeper; a depressible plate Within said casing connected directly to said safety bolt to positively move the same out of engagement with said keeper when said plate is depressed; and actuating means for said plate.

5. In a door-lock, the combination, With a keeper; of a locking mechanism embodying a rotatable, key-operated cylinder; a casing for the locking mechanism; a safety bolt mounted Within said casing and having a portion projecting eXteriorly thereof for engagement with said keeper; a releasing member Within said casing operable upon said safety bolt to positiveljd move the same out of engagement with said keeper; and means carried by said cylinder for actuating said releasing member.

6. In a door-lock, the combination, With a locking mechanism, a casing therefor, and a keeper; of a safety bolt mounted Within said casing and having a portion projecting eX- teriorly thereof for engagement With said keeper; a releasing member mounted to turn Within the casing and operable upon said safety bolt when so turned to positively move it out of engagement with said keeper,

said member being provided With a bent part; and key-operated means operable upon said bent part to positively actuate said releasing member.

7 In a door-lock, the combination, With a keeper; of a locking mechanism embodying a rotatable, key-operated cylinder; a casing forthe 'locking mechanism; a safety bolt mounted Within said casing and having a portionprojecting exteriorly thereof for engagement with said keeper; a releasing member mounted to turn Within said casing and operable upon said safety bolt When so turned to positively move it out of engagement with said keeper and provided with a bent part; and means operated by the rotation of said cylinder adapted to engage said bent part, so as to turn said releasing member.

i 8. In a door-lock, the combination, With a keeper; of a locking mechanism embodying a rotatable, key-operated cylinder; a casing for the locking mechanism; a safety bolt mounted Within said casing and having a portion projecting eXteriorly thereof `for engagement With said keeper; a releasing member Within said casing operable upon said safety bolt to positively disengage the same from said keeper and provided with abent part; and an arm connected to said cylinder and adapted to engage said bent part, so as to actuate said releasing member. i

9. In a door-lock, the combination, With a keeper; of a locking mechanism embodying a rotatable, key-operated cylinder; a casing for the locking mechanism; a safety bolt having a pivotal mounting Within the casing to swing vertically to disengage said keeper and also to swing horizontally to permit movement of the locking mechanism and its casing relative to said., keeper; a releasing member vvithin said casing operable upon said safety bolt to positively effect its vertical, disengaging movement; and means operated by the rotation of said cylinder for actuating said releasing member.

In testimony whereof I have affixed my signature in presence of two Witnesses.

FRITZ VOGELSANG. Witnesses ROBERT MIGHALSKY, HENRY HASPER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

